Hot rolled silicon steel producing method
US9496078B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2012 |
| Grant date | Nov 15, 2016 |
| Priority date | — |
| Expiry date | Jan 16, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D2201/05
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A hot rolled silicon steel producing method comprises: silicon steel slab heating process, rough rolling process and finish rolling process. The heating process comprises a pre-heating stage, a heating stage and a soaking stage. The pre-heating stage satisfies the following formula (1). In the formula, VTp is a temperature increasing rate, in the pre-heating stage, whose unit is ° C./min; t is a total heating time of the slab in the heating furnace, and t=180-240 min; and Tc is an initial temperature when the slab is put into the furnace, whose unit is ° C. By using the foregoing formula, the heating process and the rough rolling process are changed, an occurrence rate of edge defects during the production of the hot rolled silicon steel can be reduced, and the hot rolled silicon steel with good surface quality can be produced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.